Please consider adding an option to automatically do the labeling for each
build. I would see this being an optional (checkbox) feature in the job config
screen, probably with a way to specify the pattern for the label, similar to the
way the workspace name can be defined.

This could be modeled after way the <tfslabel> Teamprise Ant task works
(http://www.teamprise.com/products/ant/).

Here's an example of the command line that could be used:

tf label $LABEL $PROJECT_PATH -version:W -recursive

where $LABEL is the label to apply, and $PROJECT_PATH is the project path as
defined on the job config screen.

"-version:W" means the label will be applied to the workspace version of the
files, which is the same approach used by Team Build; see
http://blogs.msdn.com/buckh/comments/724919.aspx, which states:

"Another very common approach is creating a label using the versions of files in
a workspace. A workspace is also a collection of files, each potentially from a
different point in time. Team Build labels the files in its workspace as part
of the build process. By doing this Team Build guarantees that it is labeling
what it's building."